Which of the following call be inferred from the passage about cotton production in the United States after the introduction of Whitney's cotton gin

A．( More cotton came from sea island cotton plants than befor

B．( More cotton came from short-staple cotton plants than befor

C．( Most cotton produced was sold domesticall

D．( Most cotton produced was exported to Englan

相互反应能得到氯化铁的反应是[ ]

A. 铁和稀盐酸

B. 氧化铁和盐酸

C. 氢氧化铁和稀硫酸

D. 铁和氯化铜溶液